AD7768/AD7768-4 Simultaneous Sampling ADCs

ADI offers a series of 24-bit simultaneous sampling Σ-Δ A/D converters for wide-bandwidth, high-density instrumentation, energy and healthcare equipment. The AD7768 series includes a power-scalable modulator and digital filter on each channel to enable the synchronized, precise measurement of both AC and DC signals in instrumentation applications, including modular-data acquisition, audio test, and asset-condition monitoring. The high throughput, fast-settling response, and simultaneous sampling of the AD7768 series enable faster test times. This reduces testing costs and allows more efficient instrumentation design. The AD7768 series’ high channel count provides healthcare devices, such as clinical vital signs monitoring equipment, with the means to significantly expand channel density while maintaining low-power and high input bandwidth. The converters also deliver improved power-quality monitoring through the ability to detect harmonic distortion over a wider bandwidth, for detection and diagnosis of a grid imbalance. A scalable, easy-to-configure layout also allows system designers to save additional time and cost by using a single converter series across multiple equipment platforms, performance points and measurement ranges.

The 24-bit, 8-channel AD7768 and the 24-bit, 4-channel AD7768-4 have a 6 dB dynamic range advantage over the nearest competing products and deliver the industry’s best, integral non-linearity (INL) performance across the widest available bandwidth, in addition to achieving 10 times better offset, a 30 times reduction in gain error, and a 2x improvement in gain drift.